The ringleader behind the Paris terror attacks was planning to carry out further atrocities on Jews, schools and the transport system before he was killed in a shootout with police, it has been claimed.

Abdelhamid Abaaoud, a Belgian national of Moroccan origin, had also boasted of the ease with which he had re-entered Europe from Syria via Greece two months earlier, it is reported.

Just five days after the Paris attacks, which claimed the lives of 130 people, Abaaoud was tracked to a squat in a run down suburb of the city.

He had been holed up in the apartment with his cousin and two other jihadis thought to be part of a cell about to launch an assault on the Paris business district.

Abaaoud was blasted to death in a shoot out with anti-terror cops and his cousin Hasna Ait Boulahcen was killed as another one of the gang exploded a suicide vest.

Wanted: Salah Abdesalam as he looks without a disguise (Image: Getty Images)

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A leaked witness statement published earlier this week revealed how Abaaoud approached his cousin Hasna Ait Boulahcen two days after the killing spree asking her to hide him while he prepared further attacks.

Speaking of the planned future attacks, Abaaoud told his cousin on November 15 that "they would do worse (damage) in districts close to the Jews and would disrupt transport and schools", the witness statement said.

Abaaoud said he would give Boulahecen 5,000 euros to buy two suits and two pairs of shoes for him and an unidentified accomplice to "look the part" in a planned attack on Paris' commercial district La Defense.

Paris prosecutor Francois Molins confirmed on Tuesday the militants had been plotting to attack La Defense on November 18.

Wanted: Mohamed Abrini, 30 (Image: Getty Images)

The witness statement also described how Abaaoud had boasted about slipping into Europe with refugees fleeing Syria's civil war and then spending two months in France undetected prior to the attacks.

"France - zero," it quoted him as saying.

The other terrorists included suicide bomber Ibrahmi Abdeslam, who blew himself up outside the Stade de France, and his brother Salah Abdeslam, who is suspected of being one of the gunmen on the night before fleeing the city.

He is the subject of an international manhunt and feared to be plotting another attack in Europe.

The architect of the plot, Abdelhamid Abaaoud, was also placed on the “terror watchlist” which was passed to the mayor of their home town of Molenbeek in Brussels - which has been dubbed the “jihadi capital of Europe”.

Intelligence agencies thought Abaaoud was still in Syria after leaving for the war torn state in early 2014.

But he had secretly been travelling back and forth between Syria and Europe for months while planning the mayhem, which was executed on November 13.

'Jihadi capital': Molenbeek in Belgium (Image: Rex)

Francoise Schepmans, the Mayor of Molenbeek, defended accusations authorities should have acted earlier.

She said: “What was I supposed to do about them? It is not my job to track possible terrorists.

“That is the responsibility of the federal police.”

Police across Europe are still hunting Salah Abdeslam and another “armed and dangerous” man Mohamed Abrini, 30, who was seen driving a car used in the attacks just 48 hours before the tragedy.

Meanwhile, most of Brussels started to return to normal following five days of lockdown after the city was placed on the highest level of security alert in anticipation of an imminent terror attack.

Schools and businesses reopened across the capital despite hundreds of armed police and soldiers continuing to patrol the streets.

In the wake of the Paris killings, hospitals across Belgium have been warned they could be targeted by Islamic State terrorists who could be plotting an attack in the country.

Security services have said there is also a high risk of jihadis impersonating medical staff in order to gain access to buildings to launch an atrocity.

Earlier this week medical staff at a hospital in neighbouring France reported the theft of specialist medical supplies including protective gear which is used when handling dangerous chemicals.